Regarding the flat film thickness, \(\hat{h}_\infty \) , it is possible to relate it to the curvature in the limit \(\eta \gg 1\) , that is, where the film connects with the static meniscus.
Integrating equation (REF ) with the initial conditions \(F = \mathrm {d}F/\mathrm {d}\eta = 0\)  at \(\eta = 1\) , as suggested in [1]}, we get \(\mathrm {d}F/\mathrm {d}\eta (\eta \rightarrow \infty ) = 2 \eta ^{\prime \prime }(\eta \rightarrow \infty ) = 2.673\) .
